package com.dzg.demo.example.immutable;

import com.dzg.demo.annoations.ThreadSafe;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
@ThreadSafe
public class ImmutableExample3 {
    private final static ImmutableList list = ImmutableList.of(1, 2, 3);
    private final static ImmutableSet set = ImmutableSet.copyOf(list);
    private final static ImmutableMap<Integer, Integer> map = ImmutableMap.of(1, 2, 3, 4);
    private final static ImmutableMap<Integer, Integer> map2 = ImmutableMap.<Integer,Integer>builder().put(1, 2).put(3, 4)
            .build();
    public static void main(String[] args) {
//        list.add(4);
//        set.add(4);
        map2.put(1, 4);
    }
}
